The top panels (a, b, c) show the different arcs of TEC considered in the reconstruction process under the MSTID scenario. Specifically, panel (a) shows the output of the GG calibration algorithm (vTEC), panel (b) shows the moving average smoothed vTEC arc and panel (c) shows the smoothed arc summed with the TID wave model (blue line of panel (d)). The bottom panel (d) instead shows the detrended (FIF-based band-pass) version of the synthetic arc (orange line) along with the TID wave model calculated at the IPP locations (blue line).